Description - Keysight x-series User Reference Manual

8 Frequency Scan Measurement
Meas Setup
Relative to RL
Chooses whether the limit line amplitude points are coupled to the instrument reference level, and
whether the amplitude points are expressed as an offset from the instrument reference level.
For example, assume you have a limit line, and the reference level at –10 dBm. If Relative to RL is "Off",
entering a limit line segment with an amplitude coordinate of –20 dB displays the limit line segment at –20
dBm, and the limit line segment will not change amplitude if the reference level amplitude changes. If
Relative to RL is "On", entering a limit line segment with an amplitude coordinate of –20 dB displays the
limit line segment at RL – 20 dB, or –30 dBm. Furthermore, if the reference level amplitude changes to –30
dBm, the limit line segment will be displayed at RL – 20 dB, or –50 dBm.
It is possible to change this setting after a limit line has been entered. When changing from On to Off or
vice-versa, the amplitude values in the limit line table change so that the limit line remains in the same
position for the current reference level settings of the analyzer.
Key Path
Remote Command
Example
Couplings
Preset
State Saved
Range
Initial S/W Revision

Description

Provides a description of up to 60 characters by which you can easily identify the limit. The descriptions will
be stored in the exported file and can be displayed in the active function area by selecting them as the
active function, if desired to be in a screen dump.
Key Path
Remote Command
Example
Preset
State Saved
Backwards
Compatibility SCPI
Backwards Compatibility
SCPI Notes
Initial S/W Revision
488
Meas Setup, Limits, Properties, Fixed/Relative
:CALCulate:FSCan:LLINe[1]|2|...|6:AMPLitude:CMODe:RELative ON | OFF | 1
| 0
:CALCulate:FSCan:LLINe[1]|2|...|6:AMPLitude:CMODe:RELative?
CALC:FSC:LLIN:AMPL:CMOD:REL ON Makes limit line 1 relative to the reference level amplitude.
Pressing this button makes Reference level the active function.
Off, not affected by Mode Preset, preset by Restore Mode Defaults.
Saved in instrument state.
On|Off
A.07.00
Meas Setup, Limits, Properties
:CALCulate:FSCan:LLINe[1]|2|...|6:DESCription "string"
:CALCulate:FSCan:LLINe[1]|2|...|6:DESCription?
CALC:FSC:LLIN:DESC "European Emissions"
"" (null String), not affected by Mode Preset, preset by Restore Mode Defaults.
Saved in instrument state.
:CALCulate[1]|2:LIMit[1]|2|...|6:NAME
The suffix [1]|2 is irrelevant to the measurement, they are added solely for remote language
compatibility.
A.07.00
EMI Receiver Mode Reference